State fines S.J. treatment plants

Water-quality regulators on Thursday announced fines against the operators of 14 wastewater treatment plants throughout the Central Valley, including the cities of Stockton, Manteca and Tracy.

Stockton was fined $36,000 for violating limits of chlorine, cyanide and ammonia in the treated wastewater it releases into the San Joaquin River. The violations took place over a span of more than two years.

Manteca was fined $57,000 for violations that occurred during the construction of improvements to utility systems there, and Tracy was fined $6,000 for various water-quality violations in the treated wastewater it releases into Old River, part of the Delta.

The Central Valley Regional Water Quality Control Board said cities can pay the penalties within 30 days or request a hearing.